how to fix P0301 misfire code in Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Replace Spark Plug

1. Remove Engine Cover (if applicable)
   • Use a socket set to remove screws/bolts securing the cover.
2. Disconnect Ignition Coil
   • Unplug the electrical connector from the ignition coil on cylinder 1.
   • Remove the bolt securing the ignition coil using a socket.
3. Remove Spark Plug
   • Use a spark plug socket to carefully unscrew and remove the spark plug from cylinder 1.
4. Install New Spark Plug
   • Apply anti-seize compound on the threads of the new spark plug.
   • Torque the new spark plug to the manufacturer’s specifications (typically around 13-18 lb-ft).

3. Replace Ignition Coil (if necessary)

1. Install New Ignition Coil
   • Place the new ignition coil into the spark plug well and secure it with the bolt.
   • Replug the electrical connector onto the ignition coil.

4. Replace Fuel Injector (if necessary)

1. Remove Fuel Rail
   • Depressurize the fuel system by removing the fuel pump fuse and starting the engine until it stalls.
   • Disconnect the fuel lines using the appropriate tool and remove the bolts securing the fuel rail.
2. Remove Old Fuel Injector
   • Carefully pull the old fuel injector out of the fuel rail and cylinder head.
3. Install New Fuel Injector
   • Lubricate the O-ring of the new fuel injector with engine oil and install it into the fuel rail.
   • Reattach the fuel rail and secure it with bolts.

5. Final Steps

• Reconnect the battery terminal.
• Start the engine and allow it to reach normal operating temperature.